CN105804750A - Prevention method for pressure bump of approximately-vertical super-thick coal seams - Google Patents
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- 239000003245 coal Substances 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000002265 prevention Effects 0.000 title claims abstract description 24
- 239000011435 rock Substances 0.000 claims abstract description 119
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 238000005422 blasting Methods 0.000 claims description 59
- 238000005553 drilling Methods 0.000 claims description 34
- 238000005065 mining Methods 0.000 claims description 20
- 238000009826 distribution Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 abstract description 5
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- 238000005336 cracking Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 238000010276 construction Methods 0.000 description 5
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- 238000010586 diagram Methods 0.000 description 4
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
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- 230000002269 spontaneous effect Effects 0.000 description 2
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- 230000004323 axial length Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
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Abstract
The invention discloses a prevention method for pressure bump of approximately-vertical super-thick coal seams. The prevention method comprises the following steps that S1, before a horizontal coal seam in each stage is exploited, rock pillars, a coal seam roof and a coal seam floor on the corresponding exploitation level are subjected to water injection and softening; S2, the rock pillars, the coal seam roof and the coal seam floor on the corresponding exploitation level are subjected to pre-cracking and bursting; and S3, the horizontal coal seam in the corresponding stage is subjected to water injection, softening, pressure relief and bursting. The rock pillars, the coal seam roof and the coal seam floor are all rock mass. By the adoption of the prevention method for pressure bump of the approximately-vertical super-thick coal seams, regional structure horizontal stress can be prevented from being transferred to the coal rock mass, the energy accumulation degree of the coal rock mass is reduced, the risk of pressure bump of the approximately-vertical super-thick coal seams is effectively lowered, and technical support and safety insurance are provided for safe and efficient production of mines under the similar conditions.
Description
Technical field
The present invention relates to technical field of coal exploitation, be specifically related to the prevention and controls of a kind of suberect super high seam bump.
Background technology
When bump usually occurs in coal mining, it is potential energy produced by the elastic deformation built up in a kind of rock mass, when there is suddenly fierce release, the phenomenon causing rock rupture, bursting and eject.Along with coal mining depth to continue to increase the continuous ore deposit with limit of mining big, threat and harm that bump brings to mine are also day by day serious.Bump has become Safety of Coal Mine Production problem urgently to be resolved hurrily in world wide.Preventing and controlling for gently inclined seam bump, China and other countries of mainly mining have defined theory and the method for multiple molding, and achieve at a lot of mines and to apply effect preferably, and about the pertinent literature of half-edge coal seam Controlling of Coal Outburst, or the relevant report about the Controlling of Coal Outburst of the bigger near upright super high seam in inclination angle is then extremely rare.Half-edge coal seam mentioned here, refers to the coal seam more than 45 °, the inclination angle；And the mean obliquity in nearly upright coal seam has reached 87 °, for the coal seam close to the nearly vertical direction of 90 °.Additionally, when coal seam thickness is more than 8m, may be defined as super high seam.Suberect super high seam mainly composes the northwestward that there is China, particularly Xinjiang region.For the colliery of certain company, mine belongs to typical severe inclined thick coal seam occurrence condition, and mine presses accident with in succession there occurs 6 Secondary Shocks within the several years, seriously constrains the safe and efficient production in its colliery.
Judging from macroscopic perspective, Indian Ocean plate is comparatively frequent with the relative motion of Eurasian plate, and NORTHWEST CHINA Crust is obvious by horizontal direction stress effect, is mostly in strong compressive state.Impact by regional structure horizontal stress, part coal seam, the Northwest presents suberect state, the effect being squeezed is obvious, the energy that coal and rock inner accumulated is higher, judge from geology dynamic environment, nearly upright super high seam often possesses the dynamic condition that bump occurs, and the danger that bump occurs is bigger.Bump generally throw with coal petrography fly, loud noise, blast, gently then cause rock falls, heavy then have obvious seismaesthesia, it has very big destructive power, is one of Coal Mine Disasters.Therefore, it is necessary to bump phenomenon produced by suberect super high seam makes prevention and controls.
Summary of the invention
The present invention provide a kind of can blacked-out areas tectonic level stress to the transmission of coal and rock, slow down the energy accumulation degree of coal and rock, effectively reduce the prevention and controls of the dangerous near upright super high seam bump that nearly upright super high seam bump occurs.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
The prevention and controls of a kind of nearly upright super high seam bump is provided, comprises the following steps:
S1., before the horizontal seam in each stage is exploited, the rock pillar of corresponding mining level and roof, seat earth are carried out water filling softening；
S2. the described rock pillar of corresponding mining level and described roof, described seat earth are carried out presplit blasting；
S3. the described horizontal seam in place stage is carried out water filling softening and relieving shot；
Described rock pillar, described roof and described seat earth are rock mass.
Further, after performing step S3, the goaf of the described horizontal seam after exploitation is carried out filling.
Further, before performing step S1, at the reserved chamber of described rock mass.
Preferably, described chamber includes several crossdrifts and several drill sites, and several described crossdrifts are arranged along the tendency direction of described rock mass, and several described drill sites are arranged in the end of several described crossdrifts.
Further, the described water filling softening method in step S1 is as follows:
S11. orientation and the quantity of rock mass water injecting drilling are determined: respectively arrange a described rock mass water injecting drilling at each described drill site along the both sides moving towards direction of described rock mass；
S12. the degree of depth and the spacing of described rock mass water injecting drilling are determined；
S13. close described rock mass water injecting drilling: close described rock mass water injecting drilling the length that length is described water injecting drilling 1/4.
Further, the described presplit blasting method in step S2 is as follows:
S21. orientation and quantity that rock blasting holes are determined: respectively arrange the two described rock blastings borings of row at each described drill site along the both sides moving towards direction of described rock mass, often arrange the both sides that the boring of described rock blasting is arranged in the described rock mass water injecting drilling of corresponding row；
S22. the degree of depth that described rock blasting is holed is determined；
S23. powder charge: the length of described powder charge is the 3/4 of the length of described rock blasting boring；
S24. blasting method is determined.
Preferably, often arranging the boring of described rock blasting and include the boring of several described rock blastings, the boring of several described rock blastings is in sector distribution.
Further, the described water filling softening method in step S3 is as follows:
S31. several described coal Bed Water Injection Hole Drillings are respectively arranged at the contact ort of work surface along the both sides moving towards direction of described horizontal seam；
S32. adopt the mode that high pressure water injection combines with static pressure water filling that horizontal seam is carried out water filling softening.
Further, the described relieving shot method in step S3 is as follows:
S33. from the open-off cut of horizontal seam, move towards direction along described work surface, arrange several coal body blasting boreholes at haulage way and tailgate respectively；
S34. a described coal body blasting boreholes of row is respectively arranged in each layer of position of described work surface.
Further, the method that described goaf carries out in step S4 filling is as follows:
Adopt spoil self-slide filling, after the described horizontal seam back production of each mining level, earth's surface sand is directly fills up to from earth's surface the top of spoil.
Compared with prior art, before the prevention and controls of the near upright super high seam bump of the present invention horizontal seam in each stage is exploited, first rock mass is carried out water filling softening, with blacked-out areas tectonic level stress to the transmission of coal and rock, slow down the energy accumulation degree of coal and rock, rock mass is carried out presplit blasting again to discharge the pressure of rock mass, then the horizontal seam in place stage is carried out water filling softening and relieving shot, coal body is made to lose Burst Tendency, effectively reduce the danger that nearly upright super high seam bump occurs, also act the effect of fire extinguishing simultaneously, safe and efficient production for conditions of similarity mine provides technical support and safety guarantee.
Accompanying drawing explanation
Fig. 1 is the top view of the production face of nearly upright super high seam in one embodiment of the invention.
Fig. 2 is the Section A-A schematic diagram in Fig. 1.
Fig. 3 is the section B-B schematic diagram in Fig. 1.
Fig. 4 is the C-C schematic cross-section in Fig. 1.
Accompanying drawing labelling synopsis:
10-horizontal seam 11-coal Bed Water Injection Hole Drilling 12-coal body blasting boreholes
13-gets in touch with ort 14-haulage way 15-tailgate
20-rock pillar 21-rock mass water injecting drilling 22-rock blasting is holed
30-roof 40-seat earth 51-crossdrift
52-drill site 60-charges
F1-moves towards direction F2-and is inclined to direction b-width
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
It is the embodiment of the prevention and controls of the closely upright super high seam bump of the present invention as shown in Figures 1 to 4.Shown in Fig. 1, this prevention and controls comprises the following steps:
S1. before the horizontal seam 10 in each stage is exploited, the rock pillar 20 of corresponding mining level and roof 30, seat earth 40 are carried out water filling softening, with blacked-out areas tectonic level stress to the transmission of rock mass, namely slow down the energy accumulation degree of rock pillar 20, roof 30 and seat earth 40；
S2. the rock pillar 20 of corresponding mining level and roof 30, seat earth 40 are carried out presplit blasting, effectively to discharge the pressure of rock pillar 20, roof 30 and seat earth 40, reduce the stress degree of horizontal seam 10；
S3. the horizontal seam 10 in place stage is carried out water filling softening and relieving shot, in horizontal seam 10, water filling can destroy the layer reason of coal body, joint, coal body is made to produce bigger crack, destroy the globality of coal body, the fragility making coal body weakens, plasticity strengthens, thus changing the physico-mechanical properties of coal body, coal body is made to lose Burst Tendency.
Rock pillar 20 mentioned here, roof 30 and seat earth 40 are rock mass, and horizontal seam 10 is coal body；And generally will be provided with shaft station, stage main haulage roadway and undertake the level of full stage transport task and be called mining level.Wherein, roof 30 in the present embodiment and seat earth 40, with coal seam to actually generate order unrelated, in the production face of nearly upright super high seam, be normally at left side for roof, the top position in corresponding diagram 1；What be positioned at right side is seat earth, the lower position in corresponding diagram 1.
The prevention and controls of the nearly upright super high seam bump of the present embodiment can blacked-out areas tectonic level stress to the transmission of coal and rock, slow down the energy accumulation degree of coal and rock, effectively reduce the danger that nearly upright super high seam bump occurs, the safe and efficient production for conditions of similarity mine provides technical support and safety guarantee.
The present embodiment adopts layering Longwall top coal caving technology, i.e. layering colliery comprehensive mechanization coal caving mining method, after layering longwall top coal caving, the filling material in the goaf on top can fall next level, be bound to the appearance in space, cause that coal body directly contacts with air, it is easy to the phenomenon of spontaneous fire occurs.As the improvement to the present embodiment, after performing step S3, the goaf of the horizontal seam after exploitation is carried out filling.
In order to drill through water injecting drilling and blasting boreholes in coal and rock, carrying out corresponding water filling and blasting technology, before performing the step S1 of the present embodiment, be typically in rock mass, namely rock pillar 20, roof 30 and seat earth 40 reserve chamber.Chamber refers to that three, space axial length is more or less the same and does not lead directly to again the underground passage on ground, such as hoist house, electric substation, coal bunker etc., its effect is to install various equipment, machine at underground coal mine, material stored and instrument, or make other special purposes, such as machine maintenance room, explosives magazine, lobby etc., also have and keep away calamity hedging etc. for burst accident.
In the present embodiment, chamber includes several crossdrift 51 and several drill sites 52, and these crossdrifts 51 are arranged along the tendency direction of rock mass, and these drill sites 52 are arranged in the end of crossdrift 51.The concrete method for arranging of these crossdrifts 51 and drill site 52 is as follows:
S01. determine the quantity of crossdrift 51: move towards direction F1 along rock mass, arrange several crossdrifts 51 at rock pillar 20, roof 30 and seat earth 40；
S02. determine the length of crossdrift 51: these crossdrifts 51 are arranged along the tendency direction F2 of rock mass, namely the length of crossdrift 51 should close to or up rock pillar 20, roof 30 or seat earth 40 half of width b on tendency direction F2, as shown in Figure 1.It should be noted that for the process for stoping adopting layering Sub-Level Caving, exploit successively downwards from earth's surface, each layer height is 25m, namely can exploit the thick coal seam of 25m each time.In order to prevent and treat the generation of bump, it is necessary to all arrange release chamber each layer of position, therefore the length of crossdrift 51 should close to or up the half of rock pillar 20, roof 30 or the seat earth 40 width b on tendency direction F2, i.e. centre position；
S03. the quantity of drill site 52 is determined: the end in each crossdrift 51 arranges several drill sites 52.Be arranged so as to next construct in rock pillar 20, roof 30 and seat earth 40 water injecting drilling and the blasting boreholes of drill site 52, for bump preventing and controlling offer construction space is provided.If directly carried out in crossdrift 51, crossdrift 51 is accomplished by bigger radius, makes construction cost raise.Furthermore, it is necessary to illustrate, drill site 52 does not have fixing construction reference, as long as the equipment such as people, rig, drilling rod, convenient construction can be held.
Preferably, several crossdrift 51 equidistant placement.Equidistant placement crossdrift 51 makes coal mine underground construction more convenient, in order to determine particular location.Meanwhile, the crossdrift 51 of equidistant placement, it is possible to make follow-up water injecting drilling, equidistant the staying of blasting boreholes set, make hard rock pillar 20 crush release degree and be more uniformly distributed, be conducive to the embodiment of release effect.
It should be noted that, in the present embodiment, move towards direction and refer to the bearing of trend of coal body or rock mass, actually horizontal seam 10 move towards direction and coal body move towards direction, and coal body move towards direction and rock mass move towards the F1 that direction is illustrated as in Fig. 1 namely the left and right directions of Fig. 1；Tendency direction refers to and moves towards direction is the direction of 90 °, i.e. F2 in Fig. 1, namely the above-below direction in Fig. 1.
It is preferred that the water filling softening method in the present embodiment step S1 is as follows:
S11. determine orientation and the quantity of rock mass water injecting drilling 21: as shown in Figure 1 and Figure 2, respectively arrange a rock mass water injecting drilling 21 at each drill site 52 along the both sides moving towards direction F1 of rock mass；
S12. the degree of depth and the spacing of rock mass water injecting drilling 21 are determined: the degree of depth of rock mass water injecting drilling 21 and spacing can make the rock mass of corresponding mining level generally be moistened, it is understood that by generally moistening, rock mass is referred to that rock mass across pitch direction F1 and tendency direction F2 is all moistened simultaneously；
S13. rock mass water injecting drilling 21 is closed: the 1/4 of the length that length is water injecting drilling of closing rock mass water injecting drilling 21, sealing property is preferably.
It is preferred that the presplit blasting method in step S2 is as follows:
S21. orientation and the quantity of rock blasting boring 22 are determined: as shown in Figure 2, two row's rock blastings borings 22 are respectively arranged along the both sides moving towards direction F1 of rock mass at each drill site 52, this two rows rock blasting boring 22 is arranged in the both sides of rock mass water injecting drilling 21 along the direction F2 that is inclined to of rock mass, and namely often row's rock blasting boring 22 is arranged in the both sides of the rock mass water injecting drillings 21 of corresponding row；
S22. the degree of depth of rock blasting boring 22 is determined: the degree of depth of rock blasting boring 22 can make the rock mass of corresponding mining level fully be pulverized；
S23. powder charge: the length of powder charge is the 3/4 of the length of rock blasting boring 22；
S24. blasting method is determined.Being generally adopted millisecond detonator packet explosion, each row's rock blasting boring 22 is detonated simultaneously.
Preferably, often row's rock blasting boring 22 includes several rock blastings boring 22, as in figure 2 it is shown, multiple rows of rock blasting boring 22 is in sector distribution, the angle between rock blasting boring 22 is determined according to the experience degree of crushing of rock mass after the coal mine explosion of place.These rock blastings boring 22 is in sector distribution, and it has a very wide distribution, it is possible to make full use of the effect in flakes during explosion, when rock blasting hole 22 quantity identical time, it is possible to release wider, so can reduce investment outlay, reduce cost.
It is preferred that the water filling softening method in step S3 is as follows:
S31. respectively arrange that several coal Bed Water Injection Hole Drillings 11, the degree of depth of coal Bed Water Injection Hole Drilling 11 and spacing can make the coal body of corresponding mining level generally be moistened at the contact ort 13 of work surface along the both sides moving towards direction F1 of horizontal seam 10；It is understood that coal body is all moistened by the generally moistening direction F1 and tendency direction F2 that moves towards referred to along horizontal seam 10 simultaneously；
S32. adopting the mode that high pressure water injection combines with static pressure water filling that horizontal seam 10 is carried out water filling softening, water injection pressure is maintained at 6-10MPa.High pressure water injection can allow in a short period of time and produce crack in coal body；Static pressure water filling is then allow coal body pass through crack, absorbs moisture fully, thus changing the physico-mechanical properties of coal body, makes coal body lose Burst Tendency.The two mode combined makes coal body absorb the better effects if of moisture, makes coal body farthest reduce Burst Tendency.
It is preferred that the relieving shot method in step S3 is as follows:
S33. from the open-off cut of horizontal seam 10, along the direction of moving towards of work surface, namely coal body move towards direction F1, arrange several coal body blasting boreholes 12 at haulage way 14 and tailgate 15 respectively；
S34. respectively arrange row's coal body blasting boreholes 12 in each layer of position of work surface, often row's coal body blasting boreholes 12 can include several coal body blasting boreholes 12 vertical with coal Bed Water Injection Hole Drilling 11.Coal body blasting boreholes 12 is similar to the distribution shape of rock blasting boring 22, all in fan-shaped, as shown in Figure 2 and Figure 3, rock blasting boring 22 requires over drill site 52 and arranges to the both sides of tendency direction F2, coal body blasting boreholes 12 then by haulage way 14 or tailgate 15 to single-sided arrangement in coal body.
S35. the degree of depth of several coal body blasting boreholes 12 and mutual spacing make the coal body of corresponding mining level fully be pulverized.
It should be noted that open-off cut refers to the beginning position of stope, haulage way 14 and tailgate 15 are carried out through with a tunnel, the equipment such as coal-winning machine, hydraulic support, scratch board conveyor are placed in the inside and carry out stoping operation；And getting in touch with ort 13 is in tunneling process, haulage way 14 and tailgate 15 are carried out the special tunnel of UNICOM, in order to the transport of equipment and pedestrian pass through during tunneling.It practice, arrange open-off cut at contact ort 13 place.
It is preferred that the method that goaf carries out in step S4 filling is as follows:
Adopting spoil self-slide filling, after horizontal seam 10 back production of each mining level, spoil layer position has certain sinking, as shown in Figure 4, earth's surface sand is directly fills up to from earth's surface the top of spoil, and the height keeping former spoil layer position is constant.It is understood that in step s 4, can being various structure of matter to the charges 60 in goaf, such as nitrogen, carbon dioxide, filling foam etc., as long as playing isolation air and itself spontaneous combustion not occurring.And consider with low cost and aboundresources, typically directly adopt the sand on earth's surface to carry out filling.
The prevention and controls of the near upright super high seam bump of the embodiment of the present invention is by carrying out water filling softening and explosion to the rock pillar 20 of corresponding mining level, roof 30 and seat earth 40, reduce the shock hazard of nearly upright super high seam, safety and high efficiency for coal seam provides guarantee, simultaneously work as fireproof effect of going out, colliery for nearly upright super high seam occurrence condition has general applicability, and economical, societal benefits are notable.
Embodiment described above is only knows explanation example of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the prevention and controls of a nearly upright super high seam bump, it is characterised in that comprise the following steps:
S1., before the horizontal seam in each stage is exploited, the rock pillar of corresponding mining level and roof, seat earth are carried out water filling softening；
S2. the described rock pillar of corresponding mining level and described roof, described seat earth are carried out presplit blasting；
S3. the described horizontal seam in place stage is carried out water filling softening and relieving shot；
Described rock pillar, described roof and described seat earth are rock mass.
2. the prevention and controls of nearly upright super high seam bump according to claim 1, it is characterised in that after performing step S3, the goaf of the described horizontal seam after exploitation is carried out filling.
3. the prevention and controls of nearly upright super high seam bump according to claim 1, it is characterised in that before performing step S1, at the reserved chamber of described rock mass.
4. the prevention and controls of nearly upright super high seam bump according to claim 3, it is characterized in that, described chamber includes several crossdrifts and several drill sites, and several described crossdrifts are arranged along the tendency direction of described rock mass, and several described drill sites are arranged in the end of several described crossdrifts.
5. the prevention and controls of nearly upright super high seam bump according to claim 4, it is characterised in that the described water filling softening method in step S1 is as follows:
S11. orientation and the quantity of rock mass water injecting drilling are determined: respectively arrange a described rock mass water injecting drilling at each described drill site along the both sides moving towards direction of described rock mass；
S12. the degree of depth and the spacing of described rock mass water injecting drilling are determined；
S13. close described rock mass water injecting drilling: close described rock mass water injecting drilling the length that length is described water injecting drilling 1/4.
6. the prevention and controls of nearly upright super high seam bump according to claim 5, it is characterised in that the described presplit blasting method in step S2 is as follows:
S21. orientation and quantity that rock blasting holes are determined: respectively arrange the two described rock blastings borings of row at each described drill site along the both sides moving towards direction of described rock mass, often arrange the both sides that the boring of described rock blasting is arranged in the described rock mass water injecting drilling of corresponding row；
S22. the degree of depth that described rock blasting is holed is determined；
S23. powder charge: the length of described powder charge is the 3/4 of the length of described rock blasting boring；
S24. blasting method is determined.
7. the prevention and controls of nearly upright super high seam bump according to claim 6, it is characterised in that often arranging the boring of described rock blasting and include the boring of several described rock blastings, the boring of several described rock blastings is in sector distribution.
8. the prevention and controls of nearly upright super high seam bump according to claim 6, it is characterised in that the described water filling softening method in step S3 is as follows:
S31. several described coal Bed Water Injection Hole Drillings are respectively arranged at the contact ort of work surface along the both sides moving towards direction of described horizontal seam；
S32. adopt the mode that high pressure water injection combines with static pressure water filling that horizontal seam is carried out water filling softening.
9. the prevention and controls of nearly upright super high seam bump according to claim 8, it is characterised in that the described relieving shot method in step S3 is as follows:
S33. from the open-off cut of horizontal seam, move towards direction along described work surface, arrange several coal body blasting boreholes at haulage way and tailgate respectively；
S34. a described coal body blasting boreholes of row is respectively arranged in each layer of position of described work surface.
10. the prevention and controls of nearly upright super high seam bump according to claim 9, it is characterised in that the method that described goaf carries out in step S4 filling is as follows:
Adopt spoil self-slide filling, after the described horizontal seam back production of each mining level, earth's surface sand is directly fills up to from earth's surface the top of spoil.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106246184A (en) * | 2016-08-24 | 2016-12-21 | 神华集团有限责任公司 | A kind of recovery method of half-edge coal seam |
| CN106884656A (en) * | 2017-03-31 | 2017-06-23 | 中国矿业大学 | A kind of explosion water filling coupling softens coal body preventing and treating impulsion pressure method |
| CN107355222A (en) * | 2017-07-18 | 2017-11-17 | 中南大学 | The flood pattern and its water-filling method of a kind of deep tunnel |
| CN109519221A (en) * | 2018-10-29 | 2019-03-26 | 河南大有能源股份有限公司耿村煤矿 | A kind of bump danger zone seat earth is broken water-filling method |
| CN110424965A (en) * | 2019-07-19 | 2019-11-08 | 天地科技股份有限公司 | A kind of coal mine rock burst control structure and method |
| CN111236942A (en) * | 2020-03-09 | 2020-06-05 | 天地科技股份有限公司 | Pressure relief method for rock burst coal seam |
| CN111828081A (en) * | 2019-04-23 | 2020-10-27 | 中国矿业大学(北京) | Method for extracting gas and preventing and extinguishing fire by using composite drill hole |
| CN113738361A (en) * | 2021-08-06 | 2021-12-03 | 中国矿业大学 | Method for preventing and treating rock burst of circular arc section of fully mechanized caving face of steeply inclined coal seam |
| CN114293989A (en) * | 2021-11-23 | 2022-04-08 | 北京科技大学 | Anti-scour method for segmented hydraulic fracturing area of near-vertical huge-thickness coal seam |
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| CN114293989A (en) * | 2021-11-23 | 2022-04-08 | 北京科技大学 | Anti-scour method for segmented hydraulic fracturing area of near-vertical huge-thickness coal seam |
| CN114293989B (en) * | 2021-11-23 | 2022-09-02 | 北京科技大学 | Anti-scour method for near-vertical ultra-thick coal seam subsection hydraulic fracturing area |
| US11976557B2 (en) * | 2021-11-23 | 2024-05-07 | University Of Science And Technology Beijing | Coal bump control method for sectional hydraulic fracturing regions of near vertical ultra thick coal seam |
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